Nut-lock.



E. A. BENSON. NUT LOCK. APPLICATION rum) $EPT. 11, 1912.

1,066,982, 7 Patented July 8, 1913.

Suva/Atom ELMIER A. BENSON, OI? PERU, ILLINOIS.

NUT LOCK.

Specification of I.etters Patent.

Application filed September 11, 1912.

Patented duty 8; 1918;"

Serial No. 719,784.

To all whom it may concern:

lie it known that I, Emma A. BENSON, a citizen of the. United States, residing at Peru, in the county of Lasalle and State of Illinois, have invented new and nse'lul'Im provements in Nut-Locks, of which the following is a specification.

The present invention relates to simple and efl'ective means tor securing a bolt and nut in locked position upon each other. and

- plan view of the nut, the locking member of the locking member.

screwed home upon the bolt.

being remov d. Fig. 3 is a perspective view Fig. 4- is a face viewillustrating the means which may be em 'iloyed for retaining the lock in engagement with the nut and bolt.

Referring now to the drawing in detail, the numeral 1. desi nates an ordinary bolt, and 2 the nut. for the bolt. The bolt 1 has its threaded shank formed with one or more longitudimilly extending grooves or depressions 3. while the. nut 2 is also provided with one or more depressions l which is adapted to register with any oi the depressions or grooves 22 of the bolt when the nut is The outer face of the nut 2 is provided with a pair of spaced orifices or pockets and (5 respectively. The pocket 5 is arranged adjacent. the groove 4 of the nut, while the pocket (5 is adapted to receive and to retain one of the o'tiset ends 7 of a spring lock member 8. The opposite end of the lock also arranged at an angle to what may be. termed the body of the lock, and its end, designated by the numeral 9, is tn-eterably pointed. The lock 8 is constructed from a single pieee of material. 'n'et'e'rably resilient wire, and

is of a length sufficient to permit its pointed end 9 being received within the pocket when the nut is screwed home upon the bolt. The pointed end of a size and shape to snugly engage within the registering grooves or depressions of the bolt and nut. and the body of the spring is adapted to exert a tension to normally force the said end within the grooves. hen it is desired to remove the nut from the bolt, it is merely necessary to insert some sharp instrument between the body of the lock and the pointed end thereof. so that the said end can be pried t'rom without the registering grtaives of the bolt and nut, and the said pointed endmay be again deposited within the pocket 5, so that the lock will not interferc with the instrument employed in disconnecting the nutfrom the bolt.

In some instances it has been found desirable to provide the lock with securing means whereby the same can not be removed from engagement with the nut and bolt without first operating the said securing means. To accon'iplish this. I provide a headed member 11 which has its stem inserted within the pocket 5 (see Fig. 4). The stem of this member may be. constructed oi. some malleable material, so that a blow upon the head 10 will cause the stem to expand and frirtionally engage the wall of the pocket 5. The head 11 is adapted to overlie the body of the lock adjacent the-pointed end 7, so that the removal of the lock cannot be aceoniplished until the headed member 11 is witl'idrawn from the pocket I- aving thus described the invention, what I claim is 1. In a lock for the purpose described the combination with a bolt and a nut, the said bolt having its threaded shank prodded with longitudinally extending grooves, the. threaded bore. of the nut being also provided with grooves, a lock member secured to tln nut. said lock :nember comprising a resilient,

element having an offset pointed end which is adapted to be received within the coarting grooves of the nut and bolt when the same are to be sustained in a locked position, and the nut being further provided with a pocket which is adapted to receive the em gaging end of the lock when the nut is in an unlocked position with relation to the bolt. 2. In a device for the purpose set forth. a bolt and a nut therefor, the bolt having its shank grooved, the nut having itsthreaded bore grooved, a spring lock comprising a single member having one of its ends secured to the nut, the opposite end of the lock be ng arranged at an angle to its body, and being pointed. the said pointed end adapted to be received within the registering grooves of the bolt and nut, when the nutis to be. lockedupon the bolt, and means comprising a removable element. for retaining the said lock in engagement with the nut and 'bolt.

In a device for the purpose set forth, the combination with a bolt having a grooved shank, and a nut for the bolt hava headed element having its shank engaging ing its threaded bore grooved, of a look, said Within the pocket and adapted to have its lock embodying a resilient member having head overlie and Contact with the lock adjaboth of its ends oiiset and one of its ends cent-its en 'aging end.

'- s secured no the nut, the nut being provided In testimony whereof I affixmy signature 15 4 with a pocket arranged adjacent its groove, in presence of two witnesses.

said pocket adapted to normally receive the ELMER A. BENSON. second ofiset end of the look, the said offset Witnesses; end also adapted to be received Within the JOHN W. PORTER",-

10 registering grooves of the nut and bolt, and F. J. PIERARD. 

